updated README

Cargo.toml

@@ -1,12 +1,21 @@
 [package]
-name = "quickmaths"
-version = "0.2.2"
+name = "quickmath"
+version = "0.3.1"
 edition = "2021"
+authors = [ "Valerie Wolfe <sleeplessval@gmail.com>" ]
+description = "A quick command-line math evaluator."
+homepage = "https://git.vwolfe.io/valerie/qm"
+repository = "https://git.vwolfe.io/valerie/qm"
+license = "MIT"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[[bin]]
+name = "qm"
+path = "src/main.rs"
 
 [dependencies]
 evalexpr = "11.0.0"
+pico-args = "0.5.0"
+rustyline = "14.0.0"
 termion = "1.5.6"
 
 [profile.release]
@@ -15,5 +24,5 @@ codegen-units = 1
 debug = false
 lto = true
 panic = "abort"
-strip = "debuginfo"
+strip = "symbols"
 

LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2024 Valerie Wolfe
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -1,5 +1,5 @@
 
-# quickmaths
+# quickmath (qm)
 
 A small, pretty command line calculator.
 
@@ -9,8 +9,34 @@ data science, and computer science.
 
 More information is available on the [project wiki](https://git.vwolfe.io/valerie/qm/wiki).
 
+## Installation
+
+### Manual Install
+
+<details>
+<summary>Release Binary</summary>
+Copy the compiled binary from the <a href="https://git.vwolfe.io/valerie/qm/releases">releases page</a>
+to a directory in <code>$PATH</code>, such as <code>/usr/bin/</code>.
+</details>
+
+<details>
+<summary>Compile from Source</summary>
+Compile using cargo with the command <code>cargo build --release</code> and copy
+the file from <code>target/release/</code> to a directory in <code>$PATH</code>,
+such as <code>/usr/bin/</code>.
+</details>
+
+### Package Managers
+
+<details>
+<summary>Cargo: <code>quickmath</code></summary>
+Install the package using Cargo with the command <code>cargo install quickmath</code>.
+</details>
+
 ## Libraries
 
-- [evalexpr](https://crates.io/crates/evalexpr)
-- [termion](https://crates.io/crates/termion)
+- [evalexpr](https://crates.io/crates/evalexpr) — expression evaluator
+- [pico-args](https://crates.io/crates/pico_args) — argument parsing
+- [rustyline](https://crates.io/crates/rustyline) — input handler
+- [termion](https://crates.io/crates/termion) — ANSI formatting
 

deny.toml

@@ -0,0 +1,4 @@
+[licenses]
+allow = [ "MIT" ]
+
+

sbom.xml

@@ -0,0 +1,192 @@
+{
+  "SPDXID": "SPDXRef-DOCUMENT",
+  "creationInfo": {
+    "created": "2024-07-09T18:21:25.518Z",
+    "creators": [
+      "Tool: cargo-sbom-v0.8.4"
+    ]
+  },
+  "dataLicense": "CC0-1.0",
+  "documentNamespace": "https://spdx.org/spdxdocs/qm-0541a043-2174-483b-9558-35c5390ec42e",
+  "files": [
+    {
+      "SPDXID": "SPDXRef-File-qm",
+      "checksums": [],
+      "fileName": "qm",
+      "fileTypes": [
+        "BINARY"
+      ]
+    }
+  ],
+  "name": "qm",
+  "packages": [
+    {
+      "SPDXID": "SPDXRef-Package-redox_termios-0.1.3",
+      "description": "A Rust library to access Redox termios functions",
+      "downloadLocation": "registry+https://github.com/rust-lang/crates.io-index",
+      "externalRefs": [
+        {
+          "referenceCategory": "PACKAGE-MANAGER",
+          "referenceLocator": "pkg:cargo/redox_termios@0.1.3",
+          "referenceType": "purl"
+        }
+      ],
+      "licenseConcluded": "MIT",
+      "licenseDeclared": "MIT",
+      "name": "redox_termios",
+      "versionInfo": "0.1.3"
+    },
+    {
+      "SPDXID": "SPDXRef-Package-bitflags-1.3.2",
+      "description": "A macro to generate structures which behave like bitflags.\n",
+      "downloadLocation": "registry+https://github.com/rust-lang/crates.io-index",
+      "externalRefs": [
+        {
+          "referenceCategory": "PACKAGE-MANAGER",
+          "referenceLocator": "pkg:cargo/bitflags@1.3.2",
+          "referenceType": "purl"
+        }
+      ],
+      "homepage": "https://github.com/bitflags/bitflags",
+      "licenseConcluded": "MIT OR Apache-2.0",
+      "licenseDeclared": "MIT/Apache-2.0",
+      "name": "bitflags",
+      "versionInfo": "1.3.2"
+    },
+    {
+      "SPDXID": "SPDXRef-Package-libc-0.2.155",
+      "description": "Raw FFI bindings to platform libraries like libc.\n",
+      "downloadLocation": "registry+https://github.com/rust-lang/crates.io-index",
+      "externalRefs": [
+        {
+          "referenceCategory": "PACKAGE-MANAGER",
+          "referenceLocator": "pkg:cargo/libc@0.2.155",
+          "referenceType": "purl"
+        }
+      ],
+      "homepage": "https://github.com/rust-lang/libc",
+      "licenseConcluded": "MIT OR Apache-2.0",
+      "licenseDeclared": "MIT OR Apache-2.0",
+      "name": "libc",
+      "versionInfo": "0.2.155"
+    },
+    {
+      "SPDXID": "SPDXRef-Package-numtoa-0.1.0",
+      "description": "Convert numbers into stack-allocated byte arrays",
+      "downloadLocation": "registry+https://github.com/rust-lang/crates.io-index",
+      "externalRefs": [
+        {
+          "referenceCategory": "PACKAGE-MANAGER",
+          "referenceLocator": "pkg:cargo/numtoa@0.1.0",
+          "referenceType": "purl"
+        }
+      ],
+      "licenseConcluded": "MIT OR Apache-2.0",
+      "licenseDeclared": "MIT OR Apache-2.0",
+      "name": "numtoa",
+      "versionInfo": "0.1.0"
+    },
+    {
+      "SPDXID": "SPDXRef-Package-evalexpr-11.3.0",
+      "description": "A powerful arithmetic and boolean expression evaluator",
+      "downloadLocation": "registry+https://github.com/rust-lang/crates.io-index",
+      "externalRefs": [
+        {
+          "referenceCategory": "PACKAGE-MANAGER",
+          "referenceLocator": "pkg:cargo/evalexpr@11.3.0",
+          "referenceType": "purl"
+        }
+      ],
+      "homepage": "https://github.com/ISibboI/evalexpr",
+      "licenseConcluded": "MIT",
+      "licenseDeclared": "MIT",
+      "name": "evalexpr",
+      "versionInfo": "11.3.0"
+    },
+    {
+      "SPDXID": "SPDXRef-Package-quickmath-0.2.3",
+      "description": "A quick command-line math evaluator.",
+      "downloadLocation": "NONE",
+      "homepage": "https://git.vwolfe.io/valerie/qm",
+      "licenseConcluded": "MIT",
+      "licenseDeclared": "MIT",
+      "name": "quickmath",
+      "versionInfo": "0.2.3"
+    },
+    {
+      "SPDXID": "SPDXRef-Package-redox_syscall-0.2.16",
+      "description": "A Rust library to access raw Redox system calls",
+      "downloadLocation": "registry+https://github.com/rust-lang/crates.io-index",
+      "externalRefs": [
+        {
+          "referenceCategory": "PACKAGE-MANAGER",
+          "referenceLocator": "pkg:cargo/redox_syscall@0.2.16",
+          "referenceType": "purl"
+        }
+      ],
+      "licenseConcluded": "MIT",
+      "licenseDeclared": "MIT",
+      "name": "redox_syscall",
+      "versionInfo": "0.2.16"
+    },
+    {
+      "SPDXID": "SPDXRef-Package-termion-1.5.6",
+      "description": "A bindless library for manipulating terminals.",
+      "downloadLocation": "registry+https://github.com/rust-lang/crates.io-index",
+      "externalRefs": [
+        {
+          "referenceCategory": "PACKAGE-MANAGER",
+          "referenceLocator": "pkg:cargo/termion@1.5.6",
+          "referenceType": "purl"
+        }
+      ],
+      "licenseConcluded": "MIT",
+      "licenseDeclared": "MIT",
+      "name": "termion",
+      "versionInfo": "1.5.6"
+    }
+  ],
+  "relationships": [
+    {
+      "relatedSpdxElement": "SPDXRef-Package-evalexpr-11.3.0",
+      "relationshipType": "DEPENDS_ON",
+      "spdxElementId": "SPDXRef-Package-quickmath-0.2.3"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-Package-redox_syscall-0.2.16",
+      "relationshipType": "DEPENDS_ON",
+      "spdxElementId": "SPDXRef-Package-termion-1.5.6"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-Package-numtoa-0.1.0",
+      "relationshipType": "DEPENDS_ON",
+      "spdxElementId": "SPDXRef-Package-termion-1.5.6"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-Package-redox_termios-0.1.3",
+      "relationshipType": "DEPENDS_ON",
+      "spdxElementId": "SPDXRef-Package-termion-1.5.6"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-Package-bitflags-1.3.2",
+      "relationshipType": "DEPENDS_ON",
+      "spdxElementId": "SPDXRef-Package-redox_syscall-0.2.16"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-Package-quickmath-0.2.3",
+      "relationshipType": "GENERATED_FROM",
+      "spdxElementId": "SPDXRef-File-qm"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-Package-termion-1.5.6",
+      "relationshipType": "DEPENDS_ON",
+      "spdxElementId": "SPDXRef-Package-quickmath-0.2.3"
+    },
+    {
+      "relatedSpdxElement": "SPDXRef-Package-libc-0.2.155",
+      "relationshipType": "DEPENDS_ON",
+      "spdxElementId": "SPDXRef-Package-termion-1.5.6"
+    }
+  ],
+  "spdxVersion": "SPDX-2.3"
+}

src/context/global.rs

@@ -1,6 +1,7 @@
 
 pub const EULER: f64		=	2.718281828459045;
 pub const GOLDEN_RATIO: f64	=	1.618033988749895;
+pub const LIGHT_SPEED: f64	=	299792458f64;
 pub const PI: f64			=	3.141592653589793;
 pub const ROOT_TWO: f64		=	1.414213562373095;
 

src/context/helper.rs

@@ -0,0 +1,140 @@
+use evalexpr::{
+	Value,
+
+	EvalexprError
+};
+
+use crate::util;
+
+pub type EvalResult = Result<Value, EvalexprError>;
+
+
+//	Mathematics
+pub fn cosine(arg: &Value) -> EvalResult {
+	Ok(
+		if		let Value::Float(float)	= arg { float.clone() }
+		else if	let Value::Int(int)		= arg { int.clone() as f64 }
+		else { return Err(EvalexprError::expected_number(arg.clone())) }
+		.cos().into()
+	)
+}
+
+pub fn fix(arg: &Value) -> EvalResult {
+	if let Value::Tuple(args) = arg {
+		let len = args.len();
+		if len == 2 {
+			let value =
+				if let Value::Float(float) = args[0] { float.clone() }
+				else { return Err(EvalexprError::expected_float(args[0].clone())); };
+
+			let operand = 10u64.pow(
+				if let Value::Int(int) = args[1] { int.clone() }
+				else { return Err(EvalexprError::expected_int(args[1].clone())); }
+				as u32
+			) as f64;
+
+			Ok( ((value * operand).round() / operand).into() )
+		} else { Err(EvalexprError::wrong_function_argument_amount(len, 2)) }
+	} else { Err(EvalexprError::wrong_function_argument_amount(1, 2)) }
+}
+
+pub fn logarithm(arg: &Value) -> EvalResult {
+	let value: f64;
+	let base: Option<f64>;
+	match arg {
+		Value::Tuple(tuple)
+			=>	{
+				let len = tuple.len();
+				if len != 2 { return Err(EvalexprError::wrong_function_argument_amount_range(len, 1..=2)); }
+
+				let i_value = tuple.get(0).unwrap();
+				if		let Value::Float(float)	= i_value { value = float.clone(); }
+				else if	let Value::Int(int)		= i_value { value = int.clone() as f64; }
+				else { return Err(EvalexprError::expected_number(i_value.clone())); }
+
+				let i_base = tuple.get(1).unwrap();
+				if		let Value::Float(float)	= i_value { base = Some(float.clone()); }
+				else if	let Value::Int(int)		= i_value { base = Some(int.clone() as f64); }
+				else { return Err(EvalexprError::expected_number(i_base.clone())); }
+			},
+		Value::Float(float)
+			=>	{
+				value = float.clone();
+				base = None;
+			},
+		Value::Int(int)
+			=>	{
+				value = int.clone() as f64;
+				base = None;
+			}
+		_	=>	return Err(EvalexprError::CustomMessage("Expected numbers.".to_owned()))
+	}
+
+	if let Some(base) = base { Ok(value.log(base).into()) }
+	else { Ok(value.ln().into()) }
+}
+
+pub fn sine(arg: &Value) -> EvalResult {
+	Ok(
+		if		let Value::Float(float)	= arg { float.clone() }
+		else if	let Value::Int(int)		= arg { int.clone() as f64 }
+		else { return Err(EvalexprError::expected_number(arg.clone())) }
+		.sin().into()
+	)
+}
+
+pub fn square_root(arg: &Value) -> EvalResult {
+	Ok(
+		if		let Value::Float(float)	= arg { float.clone() }
+		else if	let Value::Int(int)		= arg { int.clone() as f64 }
+		else { return Err(EvalexprError::expected_number(arg.clone())) }
+		.sqrt().into()
+	)
+}
+
+pub fn tangent(arg: &Value) -> EvalResult {
+	Ok(
+		if		let Value::Float(float)	= arg { float.clone() }
+		else if	let Value::Int(int)		= arg { int.clone() as f64 }
+		else { return Err(EvalexprError::expected_number(arg.clone())) }
+		.tan().into()
+	)
+}
+
+
+//	Data Science
+pub fn average(arg: &Value) -> EvalResult {
+	if let Value::Tuple(args) = arg {
+		let len = args.len() as f64;
+		let mut total = 0f64;
+
+		for arg in args {
+			total +=
+				if		let Value::Float(float) = arg { float.clone() }
+				else if	let Value::Int(int)		= arg { int.clone() as f64 }
+				else { todo!() };
+		}
+
+		Ok( (total / len).into() )
+	} else { todo!() }
+}
+
+//	Radix conversion
+pub fn binary(arg: &Value) -> EvalResult {
+	if let Value::Int(int) = arg { Ok( format!("0b{:b}", int).into() ) }
+	else if let Value::String(string) = arg { util::parse_radix("0b", 2, string) }
+	else { Err(EvalexprError::expected_number_or_string(arg.clone())) }
+}
+
+pub fn hexadecimal(arg: &Value) -> EvalResult {
+	if let Value::Int(int) = arg { Ok( format!("0x{:X}", int).into() ) }
+	else if let Value::String(string) = arg { util::parse_radix("0x", 16, string) }
+	else { Err(EvalexprError::expected_number_or_string(arg.clone())) }
+}
+
+pub fn octal(arg: &Value) -> EvalResult {
+	if let Value::Int(int) = arg { Ok( format!("0o{:#o}", int).into() ) }
+	else if let Value::String(string) = arg { util::parse_radix("0o", 8, string) }
+	else { Err(EvalexprError::expected_number_or_string(arg.clone())) }
+}
+

src/context/mod.rs

@@ -0,0 +1,68 @@
+
+pub mod global;
+pub mod helper;
+
+
+use pico_args::Arguments;
+use evalexpr::{
+	context_map,
+
+	ContextWithMutableVariables,
+	HashMapContext,
+	Value
+};
+
+use crate::flag;
+
+pub fn build(args: &mut Arguments) -> HashMapContext {
+	let mut output =
+		if !args.contains(flag::EMPTY_CONTEXT) {
+			context_map! {
+				//	globals
+				"c"		=>	global::LIGHT_SPEED,
+				"e"		=>	global::EULER,
+				"phi"	=>	global::GOLDEN_RATIO,
+				"pi"	=>	global::PI,
+				"√2"	=>	global::ROOT_TWO,
+
+				//	math functions
+				"cos"	=>	Function::new(|arg| helper::cosine(arg)),
+				"fix"	=>	Function::new(|arg| helper::fix(arg)),
+				"log"	=>	Function::new(|arg| helper::logarithm(arg)),
+				"sin"	=>	Function::new(|arg| helper::sine(arg)),
+				"sqrt"	=>	Function::new(|arg| helper::square_root(arg)),
+				"tan"	=>	Function::new(|arg| helper::tangent(arg)),
+
+				//	data science functions
+				"avg"	=>	Function::new(|arg| helper::average(arg)),
+
+				//	radix functions
+				"bin"	=>	Function::new(|arg| helper::binary(arg)),
+				"hex"	=>	Function::new(|arg| helper::hexadecimal(arg)),
+				"oct"	=>	Function::new(|arg| helper::octal(arg)),
+
+				//	character aliases
+				"ϕ"		=>	global::GOLDEN_RATIO,
+				"π"		=>	global::PI,
+				"√"		=>	Function::new(|arg| helper::square_root(arg))
+			}.unwrap()
+		} else { HashMapContext::new() };
+
+	while let Ok(value) = args.value_from_str::<&str, String>(flag::SET) {
+		let split: Vec<&str> = value.split('=').collect();
+		if split.len() == 2 {
+			let key = split[0].to_owned();
+
+			let value_str = split[1];
+			let value =
+				if let Ok(integer) = value_str.parse::<i64>() { Value::Int(integer) }
+				else if let Ok(float) = value_str.parse::<f64>() { Value::Float(float) }
+				else { Value::from(value_str) };
+
+			output.set_value(key, value).ok(); }
+		else { std::process::exit(1); }
+	}
+
+	output
+}
+

src/flag.rs

@@ -0,0 +1,7 @@
+
+pub const EMPTY_CONTEXT:	[&str;2]	=	[ "-E", "--empty"];
+pub const HELP:				[&str;2]	=	[ "-h", "--help" ];
+pub const QUIET:			[&str;2]	=	[ "-q", "--quiet" ];
+pub const SET:				&str		=	"--set";
+pub const VERSION:			[&str;2]	=	[ "-V", "--version" ];
+

src/helper.rs

@@ -1,143 +0,0 @@
-use evalexpr::{
-	Value,
-
-	EvalexprError
-};
-
-use crate::util;
-
-//	Mathematics
-pub fn fix(arg: &Value) -> Result<Value, EvalexprError> {
-	let args = arg.as_tuple()?;
-
-	let count = args.len();
-	if count != 2 {
-		return Err(EvalexprError::WrongFunctionArgumentAmount { expected: 2, actual: count });
-	}
-
-	let float = args[0].as_float()?;
-	let figures = args[1].as_int()?;
-
-	let operand: f64 = i64::pow(10, figures as u32) as f64;
-	let output = f64::round(float * operand) / operand;
-	return Ok(output.into());
-}
-
-pub fn logarithm(arg: &Value) -> Result<Value, EvalexprError> {
-	let arguments: Vec<Value>;
-	let count: usize;
-	if arg.is_tuple() {
-		arguments = arg.as_tuple()?;
-		count = arguments.len();
-	} else if arg.is_float() {
-		arguments = vec!(arg.as_float()?.into());
-		count = 1;
-	} else if arg.is_int() {
-		arguments = vec!((arg.as_int()? as f64).into());
-		count = 1;
-	} else {
-		return Err(EvalexprError::CustomMessage("Expected numbers".to_string()));
-	}
-
-	let output: Value;
-	match count {
-		1 => {
-			let argument = &arguments[0];
-			if !argument.is_number() {
-				return Err(EvalexprError::CustomMessage("Expected number".to_string()));
-			}
-			let number = if argument.is_float() { argument.as_float()? } else { argument.as_int()? as f64 };
-			output = number.ln().into();
-		},
-		2 => {
-			let arg_value = &arguments[0];
-			let arg_base = &arguments[1];
-			if !(arg_value.is_number() && arg_base.is_number()) {
-				return Err(EvalexprError::CustomMessage("Expected two numbers".to_string()));
-			}
-			let value: f64 = if arg_value.is_float() { arg_value.as_float()? } else { arg_value.as_int()? as f64 };
-			let base: f64 = if arg_base.is_float() { arg_base.as_float()? } else { arg_base.as_int()? as f64 };
-			output = value.log(base).into();
-		},
-		_ => {
-			return Err(EvalexprError::WrongFunctionArgumentAmount { expected: 2, actual: count });
-		}
-	}
-	return Ok(output);
-}
-
-pub fn square_root(arg: &Value) -> Result<Value, EvalexprError> {
-	if !arg.is_number() {
-		return Err(EvalexprError::CustomMessage("Expected a number.".to_string()));
-	}
-	let value: f64 = if arg.is_float() { arg.as_float()? } else { arg.as_int()? as f64 };
-	return Ok(value.sqrt().into());
-}
-
-//	Data Science
-pub fn average(arg: &Value) -> Result<Value, EvalexprError> {
-	let arguments = arg.as_tuple()?;
-	let count = arguments.len() as i64;
-	let mut is_float = false;
-	let mut total_i = 0i64;
-	let mut total_f = 0f64;
-
-	for argument in arguments {
-		if let Value::Float(float) = argument {
-			if !is_float {
-				total_f = total_i as f64;
-				is_float = true;
-			}
-			total_f += float;
-		} else if let Value::Int(int) = argument {
-			if is_float {
-				total_f += int as f64;
-			} else {
-				total_i += int;
-			}
-		}
-	}
-	
-	let result_i: i64;
-	let result_f: f64;
-	if !is_float {
-		is_float = total_i % count == 0;
-		total_f = total_i as f64;
-	}
-
-	if is_float {
-		result_f = total_f / (count as f64);
-		return Ok(result_f.into());
-	} else {
-		result_i = total_i / count;
-		return Ok(result_i.into());
-	}
-}
-
-//	Radix conversion
-pub fn binary(arg: &Value) -> Result<Value, EvalexprError> {
-	if !arg.is_string() {
-		let num = arg.as_int()?;
-		let fmt = format!("0b{:b}", num);
-		return Ok(fmt.into());
-	}
-	util::parse_radix("0b", 2, arg)
-}
-
-pub fn hexadecimal(arg: &Value) -> Result<Value, EvalexprError> {
-	if !arg.is_string() {
-		let num = arg.as_int()?;
-		let fmt = format!("0x{:X}", num);
-		return Ok(fmt.into());
-	}
-	util::parse_radix("0x", 16, arg)
-}
-
-pub fn octal(arg: &Value) -> Result<Value, EvalexprError> {
-	if !arg.is_string() {
-		let num = arg.as_int()?;
-		let fmt = format!("{:#o}", num);
-		return Ok(fmt.into());
-	}
-	util::parse_radix("0o", 8, arg)
-}

src/main.rs

@@ -4,103 +4,123 @@ use std::{
 		stdin,
 		stdout,
 
+		IsTerminal,
+		Read,
 		Write
-	}
+	},
+	process::exit
 };
 
 use evalexpr::{
-	context_map,
-
 	eval_with_context_mut,
 
+	ContextWithMutableVariables,
+	EvalexprError,
 	HashMapContext,
 	Value
 };
+use pico_args::Arguments;
+use rustyline::DefaultEditor;
 use termion::{
 	color,
 	style
 };
 
-mod global;
-mod helper;
+mod context;
+mod flag;
 mod util;
 
-pub const VERSION: &str = "0.2.0";
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");
 
 fn main() {
-	let mut context = context_map! {
-		//	globals
-		"e"		=>	global::EULER,
-		"phi"	=>	global::GOLDEN_RATIO,
-		"pi"	=>	global::PI,
-		"√2"	=>	global::ROOT_TWO,
+	let mut args = Arguments::from_env();
 
-		//	math functions
-		"fix"	=>	Function::new(|arg| helper::fix(arg)),
-		"log"	=>	Function::new(|arg| helper::logarithm(arg)),
-		"sqrt"	=>	Function::new(|arg| helper::square_root(arg)),
+	//	handle breaking flags
+	if args.contains(flag::HELP) {
+		help_text();
+		return;
+	}
+	if args.contains(flag::VERSION) {
+		version_text();
+		return;
+	}
 
-		//	data science functions
-		"avg"	=>	Function::new(|arg| helper::average(arg)),
+	let mut context = context::build(&mut args);
+	let is_terminal = stdin().is_terminal() && stdout().is_terminal();
+	let quiet = args.contains(flag::QUIET) || !is_terminal;
 
-		//	radix functions
-		"bin"	=>	Function::new(|arg| helper::binary(arg)),
-		"hex"	=>	Function::new(|arg| helper::hexadecimal(arg)),
-		"oct"	=>	Function::new(|arg| helper::octal(arg)),
-
-		//	character aliases
-		"ϕ"		=>	global::GOLDEN_RATIO,
-		"π"		=>	global::PI,
-		"√"		=>	Function::new(|arg| helper::square_root(arg))
-	}.unwrap();
-	let expressions: Vec<String> = env::args().skip(1).collect();
-	if expressions.len() == 0 {
-		println!("{}quickmaths v{}{}\n{}Interactive Mode{}", style::Bold, VERSION, style::Reset, style::Faint, style::Reset);
-		loop {
-			print!("> ");
-			stdout().flush().unwrap();
-			let mut i_line = String::new();
-			let line_result = stdin().read_line(&mut i_line);
-			if line_result.is_err() {
-				break;
-			}
-			let line = i_line.trim().to_string();
-			match line.as_str() {
-				""		|
-				"exit"	=>	break,
-				_		=>	do_eval(line, &mut context)
-			}
-			reset();
+	//	collect args and evaluate if present
+	let expressions = args.finish();
+	if expressions.len() > 0 {
+		for expression in expressions {
+			let expression: String = expression.to_string_lossy().into();
+			eval(&expression, &mut context, quiet);
 		}
 	} else {
-		for expression in expressions {
-			match expression.as_str() {
-				"help"	=>	help_text(),
-				_		=>	do_eval(expression, &mut context)
+		if !is_terminal {
+			let mut buffer = String::with_capacity(0);
+			if let Ok(_) = stdin().read_to_string(&mut buffer) {
+				for expression in buffer.lines() {
+					eval(&expression.to_string(), &mut context, quiet);
+				}
+			}
+		} else if let Ok(mut rl) = DefaultEditor::new() {
+			//	enter interactive mode if no args are given
+			version_text();
+			println!("{}Interactive Mode{}", style::Faint, style::Reset);
+			loop {
+				if let Ok(line) = rl.readline("> ") {
+					match line.as_str() {
+						""		|
+						"exit"	=>	break,
+						_		=>	eval(&line, &mut context, quiet)
+					}
+				}
+				reset();
 			}
 		}
 	}
 }
 
-fn do_eval(i_expression: String, context: &mut HashMapContext) {
-	let expression = i_expression.as_str();
-	let i_result = eval_with_context_mut(expression, context);
-	if i_result.is_err() {
-		println!("{}✕ {}{}", color::Fg(color::Red), style::Bold, expression);
-		return;
+fn eval(expression: &str, context: &mut HashMapContext, quiet: bool) {
+	let result = eval_with_context_mut(expression, context);
+
+	if quiet {
+		if let Ok(result) = result { println!("{result}") }
+		else { exit(1) }
+	} else { format(expression, result) }
+}
+
+fn format(expression: &str, result: Result<Value, EvalexprError>) {
+	if let Ok(result) = result {
+		if !result.is_empty() {
+			let delimiter =
+				match result {
+					Value::Boolean(_)	=>	"is",
+					Value::String(_)	=>	"=>",
+					_					=>	"="
+				};
+			println!(
+				"{faint}{italic}{expression}{reset} {delimiter} {bold}{result}",
+				bold	=	style::Bold,
+				faint	=	style::Faint,
+				italic	=	style::Italic,
+				reset	=	style::Reset
+			);
+		} else {
+			println!(
+				"{green}✓ {bold}{expression}",
+				bold = style::Bold,
+				green = color::Fg(color::Green)
+			);
+		}
+	} else {
+		println!(
+			"{red}✕ {bold}{expression}",
+			bold = style::Bold,
+			red = color::Fg(color::Red)
+		);
 	}
-	let result = i_result.ok().unwrap();
-	if result.is_empty() {
-		println!("{}✓ {}{}", color::Fg(color::Green), style::Bold, expression);
-		return;
-	}
-	let delimiter;
-	match result {
-		Value::Boolean(_bool)		=>	delimiter = "is",
-		Value::String(ref _str)		=>	delimiter = "=>",
-		_							=>	delimiter = "="
-	}
-	println!("{}{}{}{} {} {}{}", style::Faint, style::Italic, expression, style::Reset, delimiter, style::Bold, result);
 }
 
 fn reset() {
@@ -108,10 +128,17 @@ fn reset() {
 	stdout().flush().unwrap();
 }
 
-fn help_text() {
-	println!("{}quickmaths v{}{}", style::Bold, crate::VERSION, style::Reset);
-	println!("Valerie Wolfe <sleeplessval@gmail.com>");
-	println!("A mathematical expression evaluator written in Rust.\n");
-	println!("USAGE:");
-	println!("\tqm [EXPRESSION]...\n");
+fn version_text() {
+	println!("qm v{VERSION}");
+}
+
+fn help_text() {
+	version_text();
+	println!(
+"Valerie Wolfe <sleeplessval@gmail.com>
+A mathematical expression evaluator written in Rust.
+
+usage:
+   qm [EXPRESSION]..."
+	);
 }

src/util.rs

@@ -1,18 +1,10 @@
-use evalexpr::{
-	Value,
-	
-	EvalexprError
-};
 
-pub(crate) fn parse_radix(prefix: &str, base: u32, arg: &Value) -> Result<Value, EvalexprError> {
-	let i_parse = arg.as_string()?;
-	let parse = i_parse.strip_prefix(prefix).unwrap_or(i_parse.as_str());
+use evalexpr::{ EvalexprError, Value };
 
-	let i_result = i64::from_str_radix(parse, base);
-	if i_result.is_err() {
-		return Err(EvalexprError::CustomMessage("failed to parse integer from string".to_string()));
-	}
-	let result = i_result.ok();
+pub fn parse_radix(prefix: &str, base: u32, arg: &str) -> Result<Value, EvalexprError> {
+	let parse = arg.strip_prefix(prefix).unwrap_or(arg);
 
-	return Ok(result.unwrap().into());
+	if let Ok(int) = i64::from_str_radix(parse, base) { Ok(int.into()) }
+	else { Err(EvalexprError::CustomMessage("failed to parse integer from string".to_string())) }
 }
+